SAN FRANCISCO — The Boston Celtics couldn’t make a 3-pointer to start the game and found themselves in a deep hole. Then they couldn’t miss and turned the game around. But when the outside shooting failed them down the stretch, the Celtics had no answer against the Golden State Warriors and now head home on the brink of elimination following a 104-94 loss in Game 5 of the NBA Finals on Monday night. The Celtics went on an outside shooting rollercoaster ride never seen before in the NBA Finals, becoming the first team ever to miss its first 12 shots from long range and then the first team to make eight straight from 3, according to the Elias Sports Bureau. They then missed seven straight down the stretch and head back home for Game 6 on Thursday night after first back-to-back losses this postseason.